@fiocco222 Go to the Setting tab and you will see the ON/OFF with a box that shows 1000

You can either drag the slider bar underneath it or set what power you want. 0 = off and 1000 = full power

Remember, this is not linear. grbl used 0-255 for its settings. EleksCAM uses 0-1000. It gets converted before sent. So 1000 = 255